385821115761 has 16 divisors (see below), whose sum is σ = 516714704064. Its totient is φ = 256071139584.

The previous prime is 385821115759. The next prime is 385821115763. The reversal of 385821115761 is 167511128583.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (385821115759) and next prime (385821115763).

It is not a de Polignac number, because 385821115761 - 2¹ = 385821115759 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 385821115761.

It is not an unprimeable number, because it can be changed into a prime (385821115763) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4978270 + ... + 5055176.

It is an arithmetic number, because the mean of its divisors is an integer number (32294669004).

Almost surely, 2^385821115761 is an apocalyptic number.

It is an amenable number.

385821115761 is a deficient number, since it is larger than the sum of its proper divisors (130893588303).

385821115761 is a wasteful number, since it uses less digits than its factorization.

385821115761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84320.

The product of its digits is 403200, while the sum is 48.

The spelling of 385821115761 in words is "three hundred eighty-five billion, eight hundred twenty-one million, one hundred fifteen thousand, seven hundred sixty-one".